Dude before u get farming things why don't u use WPEPro to scan packet for Stealth status using [Stealth Charger] u'll find 4 to 5 send packet then scan again to make unlimited time for ur stealth status... then look the differences between first time u scan send packet and the second time using WPE then search the offset try to modify them it's 2 offset CMIIW.
Happy Farming dude!! (It's my work too anyway). But sadly the packet we have to send randomly change by the server side, just try it on ur client perhaps find something different from mine.